NG3 will be at games con i seem to remember them saying they were going to show off the multiplayer
but so far only this:

PLAYSTATION MOVE CONTROLS COME TO NINJA GAIDEN 3

Today at Gamescom Team NINJA and TECMO KOEI are proud to announce full PlayStation Move compatibility for its upcoming killer hit NINJA GAIDEN 3.

This will be the first time the hit NINJA GAIDEN series hosts motion control and it will give players a new edge when slicing through their enemy's flesh and bone.

"We are really excited to announce this fantastic news at gamescom", stated the leader of Team NINJA, Yosuke Hayashi.

"NINJA GAIDEN 3 is all about slicing and chopping through flesh and bone and PlayStation Move bring players even closer to the game's protagonist Ryu Hayabusa. The game will be compatible with all Move peripherals and it will feature full compatibility with this exciting new hardware", Hayashi added._________________

In Ninja Gaiden II, decapitating enemies and slicing off their arms and legs didn't just feel satisfying -- it was an important tactic for slowing them down and buying yourself time. This feature has been removed for Ninja Gaiden 3. Why? Because we don't want to see that anymore, apparently.

"We don't think people want to see that anymore," a member of developer Team Ninja told us at Gamescom today. "They've already seen it."

We are told Ninja Gaiden III is all about killing human beings. Team Ninja wants you to experience the feeling of your sword entering a person's body, hitting bone, and slicing through the torso. It wants these actions to feel realistic to the player, but that might be at odds with the fact that, in real life, heads and arms do come off.

The SoB and decapitating would have complemented each other so well,
I find it funny how he say "They've already seen it." But yet they gave us NGB and NGS after the first game and then NGS2 after NG2, and if we’ve already seen it why do NG3, make no sense_________________

Decapitation was pure raw win in NG2, you removing it in NGS2 was, step on to failure, now NG3 you say "we" dont want, who is "we"...you and your ego? get out of here with that nonsense.

what annoys me is the lame excuse, not even a proper one, which there never could be any.

Swords cuts limbs, torsos are harder to do, and yet he wants us to "feel" the blade is cutting, yeah right, failure written all over it.
I could manage the minimum decapitation in NGS2, but now its just dumb.